{"product_id":"water-pump-repair-kit-fits-yamaha-f15c-f20-4-stroke-outboards-replaces-6ah-w0078-00-00-6ah-w0078-02-00","title":"Water Pump Repair Kit – Fits Yamaha F15C\/F20 4-Stroke Outboards (Replaces 6AH-W0078-00-00, 6AH-W0078-02-00)","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n  \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n  \/* Base table styles *\/\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n\n  \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n  table.ss-table th {\n    white-space:nowrap;       \/* Do not wrap *\/\n    word-break:normal;        \/* Don’t break words *\/\n    letter-spacing:normal;    \/* Prevent theme styles from stretching letters *\/\n    font-weight:600;\n    background:#f8fafc;\n  }\n\n  \/* Small screen optimization *\/\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eWater Pump Repair Kit – Fits Yamaha F15C\/F20 4-Stroke Outboards\u003c\/strong\u003e provides all necessary components to restore your engine's cooling system. It is specifically designed for Yamaha F15C and F20 four-stroke outboard models from 2006 to 2023, ensuring a precise fit and reliable performance.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct interchange for Yamaha OEM part numbers 6AH-W0078-00-00 and the updated version, 6AH-W0078-02-00.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEngineered for direct OEM replacement installation.\u003c\/li\u003e\n\u003cli\u003eIncludes a new impeller, housing, and wear plates for a complete overhaul.\u003c\/li\u003e\n\u003cli\u003eRestores cooling efficiency to prevent engine overheating.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003ePart Number\u003c\/th\u003e\n        \u003cth\u003eNotes\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e6AH-W0078-00-00\u003c\/td\u003e\n        \u003ctd\u003eOriginal OEM part number.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e6AH-W0078-02-00\u003c\/td\u003e\n        \u003ctd\u003eUpdated\/superseded OEM part number.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eModel\u003c\/th\u003e\n        \u003cth\u003eRated HP\u003c\/th\u003e\n        \u003cth\u003eStroke\u003c\/th\u003e\n        \u003cth\u003eYears\u003c\/th\u003e\n        \u003cth\u003eOEM Part No.\u003c\/th\u003e\n        \u003cth\u003eNotes\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eF15C\u003c\/td\u003e\n        \u003ctd\u003e15\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e2006–2023\u003c\/td\u003e\n        \u003ctd\u003e6AH-W0078-00-00\u003c\/td\u003e\n        \u003ctd\u003eAlso fits 6AH-W0078-02-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eF20\u003c\/td\u003e\n        \u003ctd\u003e20\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e2006–2021\u003c\/td\u003e\n        \u003ctd\u003e6AH-W0078-00-00\u003c\/td\u003e\n        \u003ctd\u003eAlso fits 6AH-W0078-02-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eWater Pump Repair Kit\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect OEM Replacement\u003c\/dd\u003e\n  \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eFor use with Yamaha F15C and F20 four-stroke outboard engines\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Water Pump Housing (6AH-44311-00-00)\u003c\/li\u003e\n\u003cli\u003e1 x Cartridge Insert (63V-44322-00-00)\u003c\/li\u003e\n\u003cli\u003e1 x Water Seal Damper (6L2-44367-00-00)\u003c\/li\u003e\n\u003cli\u003e1 x Impeller (63V-44352-01-00)\u003c\/li\u003e\n\u003cli\u003e1 x Woodruff Key (664-44338-00-00)\u003c\/li\u003e\n\u003cli\u003e1 x O-Ring (93210-49046-00)\u003c\/li\u003e\n\u003cli\u003e1 x Cartridge Outer Plate (68T-44323-00-00)\u003c\/li\u003e\n\u003cli\u003e2 x Dowel Pin (93604-12M07-00)\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color:#d0021b;\"\u003e4 x Bolt (97095-08045-00)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color:#d0021b;\"\u003e2 x Plate (63V-44328-01-00)\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eDisconnect the battery and remove the engine cover.\u003c\/li\u003e\n  \u003cli\u003eDrain the gearcase oil from the lower unit.\u003c\/li\u003e\n  \u003cli\u003eRemove the mounting bolts securing the lower unit to the midsection.\u003c\/li\u003e\n  \u003cli\u003eCarefully separate the lower unit from the engine.\u003c\/li\u003e\n  \u003cli\u003eUnscrew the bolts on the water pump housing and lift it off.\u003c\/li\u003e\n  \u003cli\u003eRemove the old impeller, Woodruff key, wear plates, and gaskets.\u003c\/li\u003e\n  \u003cli\u003eClean the housing and driveshaft surfaces thoroughly.\u003c\/li\u003e\n  \u003cli\u003eInstall the new components from the kit, ensuring the impeller vanes are oriented correctly.\u003c\/li\u003e\n  \u003cli\u003eSecure the new housing and torque bolts to manufacturer specifications.\u003c\/li\u003e\n  \u003cli\u003eReinstall the lower unit, ensuring the driveshaft and water tube align.\u003c\/li\u003e\n  \u003cli\u003eRefill the gearcase with the correct grade and amount of oil.\u003c\/li\u003e\n  \u003cli\u003eReconnect the battery and test operation in a safe water environment, checking for a strong telltale stream.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow do I know if this kit fits my Yamaha outboard?\u003c\/summary\u003e\n  \u003cp\u003eCheck your engine model and year against the compatibility table. This kit is specifically for Yamaha F15C (2006–2023) and F20 (2006–2021) models. Verifying the OEM part number 6AH-W0078-00-00 or 6AH-W0078-02-00 also confirms a match.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat are the signs of a failing water pump?\u003c\/summary\u003e\n  \u003cp\u003eCommon symptoms include the engine overheating at idle or low speeds, a weak or non-existent water stream from the telltale outlet, and a noticeably brittle, cracked, or worn impeller upon physical inspection.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow often should the water pump be serviced?\u003c\/summary\u003e\n  \u003cp\u003eFor preventative maintenance, it is recommended to inspect the impeller annually and replace the entire water pump kit every 2-3 years or 200-300 hours of use, whichever comes first. This interval can be shorter in saltwater or high-debris environments.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs this the same as the 6AH-W0078-02-00 kit?\u003c\/summary\u003e\n  \u003cp\u003eYes, this kit is a direct aftermarket replacement for both OEM part numbers 6AH-W0078-00-00 and its updated counterpart, 6AH-W0078-02-00. The contents are designed to be identical for a proper fit.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eDoes this kit include a new housing?\u003c\/summary\u003e\n  \u003cp\u003eYes, this is a complete repair kit that includes the main water pump housing (6AH-44311-00-00) along with the impeller, cartridge, plates, O-ring, and all necessary hardware for a full overhaul.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat is the most critical part of the installation?\u003c\/summary\u003e\n  \u003cp\u003eEnsuring the Woodruff key is properly seated on the driveshaft flat spot before sliding on the new impeller is critical. Additionally, when sliding the housing down, be sure to turn the driveshaft clockwise to correctly flex the impeller vanes without damaging them.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat is the difference between OEM and aftermarket parts?\u003c\/summary\u003e\n  \u003cp\u003eThis listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials. Our parts are manufactured in an ISO 9002 facility and are batch-inspected for quality and consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat are the shipping speed and cost?\u003c\/summary\u003e\n  \u003cp\u003eWe ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free; expedited options will appear at checkout if they are available for your location.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat is the warranty and return policy?\u003c\/summary\u003e\n  \u003cp\u003eThis part is covered by a 1-year warranty against manufacturing defects under normal use. If you encounter any issues, please contact our support team with your order details. Returns are accepted within our standard window for unused parts in their original condition. See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify images and specifications against your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or quality control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50718270914875,"sku":"GH-17KY006","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/GH-17KY006.png?v=1762958723","url":"https:\/\/seasierra.com\/products\/water-pump-repair-kit-fits-yamaha-f15c-f20-4-stroke-outboards-replaces-6ah-w0078-00-00-6ah-w0078-02-00","provider":"SeaSierra","version":"1.0","type":"link"}